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Biomedical subjects

P Due

Publications and source records attributed to P Due.

At least 19 recordsLinked to original sources
PubMed2005

Reliability and validity of a questionnaire to measure personal, social and environmental correlates of fruit and vegetable intake in 10-11-year-old children in five European countries.

OBJECTIVES: To investigate the internal consistency of the scales and the test-retest reliability and predictive validity of behaviour theory-based constructs measuring personal, social and environmental correlates of fruit and vegetable intake in 10-11-year-old children. DESIGN: Test-retest with one-week interval. SETTING: Five European countries: Norway, Spain, Denmark, Portugal, Belgium. SUBJECTS: Three hundred and twenty-six children completed the questionnaire during class hours. RESULTS: For the total sample across all countries, the test-retest reliability was good to very good (intra-class correlation coefficient (ICC) >0.60) for 12 out of the 15 fruit constructs and also for 12 out of the 15 vegetable constructs. Acceptable ICCs, ranging between 0.50 and 0.59, were found for the remaining constructs. Test-retest reliability was comparable across countries. Only in Portugal were some significantly lower ICCs found for some constructs (knowledge and barriers related to fruit, general self-efficacy related to fruit and vegetables) compared with the other countries. Cronbach's alpha values were moderate to high (range 0.52 to 0.89) with the exception of the general self-efficacy scale, which had a value below 0.50 for both fruit (alpha=0.42) and vegetables (alpha=0.49). Spearman correlations with intake ranged between -0.16 and 0.54 for personal determinants and between 0.05 and 0.38 for environmental determinants. Compared with other studies, predictive validity can be considered moderate to good. CONCLUSIONS: The questionnaire provides a reliable, valid and easy-to-administer tool for assessing personal, social and environmental factors of potential influence on fruit and vegetable intake in 10-11-year-olds.

Attitude to Health↗
PubMed2003

Socioeconomic position in early life, birth weight, childhood cognitive function, and adult mortality. A longitudinal study of Danish men born in 1953.

OBJECTIVE: To examine the relation between socioeconomic position in early life and mortality in young adulthood, taking birth weight and childhood cognitive function into account. DESIGN: A longitudinal study with record linkage to the Civil Registration System and Cause of Death Registry. The data were analysed using Cox regression. SETTING: The metropolitan area of Copenhagen, Denmark. SUBJECTS: 7493 male singletons born in 1953, who completed a questionnaire with various cognitive measures, in school at age 12 years, and for whom birth certificates with data on birth and parental characteristics had been traced manually in 1965. This population was followed up from April 1968 to January 2002 for information on mortality. MAIN OUTCOME MEASURES: Mortality from all causes, cardiovascular diseases, and violent deaths. RESULTS: Men whose fathers were working class or of unknown social class at time of birth had higher mortality rates compared with those whose fathers were high/middle class: hazard ratio 1.39 (95% CI 1.15 to 1.67) and 2.04 (95% CI 1.48 to 2.83) respectively. Birth weight and childhood cognitive function were both related to father's social class and inversely associated with all cause mortality. The association between father's social class and mortality attenuated (HR(working class)1.30 (1.08 to 1.56); HR(unknown class)1.81 (1.30 to 2.52)) after control for birth weight and cognitive function. Mortality from cardiovascular diseases and violent deaths was also significantly higher among men with fathers from the lower social classes. CONCLUSION: The inverse association between father's social class at time of birth and early adult mortality remains, however somewhat attenuated, after adjustment for birth weight and cognitive function.

Adolescent↗
PubMed2003

Socioeconomic health inequalities among a nationally representative sample of Danish adolescents: the role of different types of social relations.

STUDY OBJECTIVE: To investigate the role of different types of social relations in adolescent health inequalities. DESIGN: Cross sectional study. Measures included family social class, indices of social relations to parents, friends, teachers, and school. SETTING: Random sample of 55 schools in Denmark. PARTICIPANTS: Nationally representative sample of 5205 students from grades 5, 7, and 9. MAIN OUTCOME MEASURES: Self reported physical and psychological symptoms. RESULTS: Adolescents from families of lower socioeconomic position reported more physical and psychological symptoms. This ranged from 40% increased odds for multiple physical symptoms among less advantaged girls, to 90% increased odds of multiple psychological symptoms for less advantaged boys. Relationships with friends or teachers showed small social class differences, while strong and consistent social class differences were found in the ways adolescents reported their own and their parents relations to school. For example, girls from families of lower socioeconomic position were more than four times as likely to report their parents unwilling to attend school meetings (odds ratio=4.54, 95% confidence intervals: 2.68 to 7.69). Poorer relations with parents, peers, teachers, and school were all associated with worse health. Patterns of parent-child relations with the school were the greatest contributors to socioeconomic differences in physical and psychological symptoms. CONCLUSIONS: The school is one of the first important social institutions directly experienced by children and socioeconomic differences in how adolescents and their parents relate to the school may be part of the cascade of early life influences that can lead to later social and health disadvantage.

Adolescent↗
PubMed2002

Exposure to teachers smoking and adolescent smoking behaviour: analysis of cross sectional data from Denmark.

OBJECTIVE: To determine whether adolescent smoking behaviour is associated with their perceived exposure to teachers or other pupils smoking at school, after adjustment for exposure to smoking at home, in school, and best friends smoking. DESIGN: Logistic regression analysis of cross sectional data from students in Denmark. SUBJECTS: 1515 grade 9 students (mean age 15.8) from 90 classes in 48 Danish schools. OUTCOME MEASURE: Self reported smoking behaviour; daily smoking and heavy smoking, defined as those smoking more than 20 cigarettes per week. RESULTS: Of the students in this study, 62% of boys and 60% of girls reported being exposed to teachers smoking outdoors on the school premises. The proportion of boys and girls reporting to have been exposed to teachers smoking inside the school building were 86% and 88%, respectively. Furthermore, 91% of boys and 92% of girls reported that they had seen other students smoking outdoors on the school premises. Adolescents' perceived exposure to teachers smoking outdoors on the school premises was significantly associated with daily smoking, having adjusted for sex, exposure to teachers smoking indoors at school and pupils smoking outdoors at school, as well as the smoking behaviour of mother, father, and best friend (odds ratio (OR) 1.8, 95% confidence interval 1.2 to 2.8). Adolescents' perceived exposure to teachers smoking inside the school building was not associated with daily smoking (OR 0.9, 95% CI 0.5 to 1.6) and perceived exposure to pupils smoking outdoors was not associated with daily smoking (adjusted OR 1.5, 95% CI 0.5 to 4.4). There were similar findings with heavy smoking as the outcome variable. CONCLUSIONS: Teachers smoking during school hours is associated with adolescent smoking. This finding has implications for future tobacco prevention strategies in schools in many countries with liberal smoking policies where it might provide support for those working to establish smokefree schools.

Adolescent↗
PubMed2000

Stability and change in structural social relations as predictor of mortality among elderly women and men.

In a follow-up study of 70-95 years old women and men (n = 911) we studied the association between change and stability in three structural aspects of social relations (contact frequency, contact diversity, cohabitation status) from 1986-1990 and mortality after the next four years in 1994. Women aged 70-74 years who developed low contact frequency or developed small contact diversity showed significantly higher mortality, adjusted ORfreq: 3.78 (1.08-13.20), adjusted ORdiv: 3.79 (1.24-11.58). Women aged 70-74 years with continuously low contact frequency showed an increased mortality compared to women constantly experiencing high contact frequency, adjusted OR: 2.75 (1.04-7.26). A tendency in the same direction for sustained small contact diversity was found, adjusted OR: 1.98 (0.70-5.61). Among women aged 75+ years no impact of frequency and diversity was demonstrated, whereas continuously living alone was a significant predictor of mortality, when compared to women continuously living with somebody, adjusted OR: 2.57 (1.29-5.09). In men, we found a significantly increased mortality among those who developed high contact frequency and developed large contact diversity ORfreq: 3.91 (1.02-14.94) and ORdiv: 6.04 (1.30-28.03). In summary, we found rather larger age differences in the strength of the association between change in structural social relations and mortality. Furthermore, the associations seemed stronger among women than men, which may however mainly be explained by the small number of men in our cohort.

Aged↗
PubMed1999

Social relations: network, support and relational strain.

We introduce a conceptual framework with social relations as the main concept and the structure and the function of social relations as subconcepts. The structure of social relations covers aspects of formal relations and social network. The function of social relations covers social support, social anchorage and relational strain. We use this conceptual framework to describe social relations in the Danish population, with questionnaire data from the Danish Longitudinal Health Behaviour Study including a random sample of each of the age groups 25-, 50-, 60-and 70-year olds, N = 2,011. The postal questionnaires were answered by a random sample in each of the age groups. The results show marked age and gender differences in both the structure and the function of social relations. The social network, measured as weekly contacts, weakens with age and so does instrumental support. Emotional support is unrelated to this decline in contact frequency and appears to be at the same level for younger and older individuals. Relational strain, measured as conflicts, declines with age for all kinds of social relations. The weakening of the social network with age does not seem to affect the level of emotional support and in turn seems to be partly compensated for by a simultaneous decline in relational strain.

Adult↗
PubMed1991

[TV and video watching among 11-15-year old children--a sociomedical perspective].

A material of 1,671 schoolchildren replied to a questionnaire about health, time spent watching television, the demographic and social situation, social network, and life satisfaction. These pupils spend two hours daily watching television and one tenth of this time is spent on video programmes. 48% of the children spend 0-10 hours weekly watching television, 35% 11-27 hours, 15% 28-37 hours and 3% more than 37 hours. Boys spend more time watching television than girls, younger pupils more than older and children from lower social classes more than children from higher social classes. The time spent watching television increases with increasing degree of urbanisation. Children who spend many hours watching television have more problems in life satisfaction, health and social network compared with children who spend a few hours watching television.

Adolescent↗
PubMed1991

[Diet and health behavior in Danish children aged 11-15 years].

A total of 1,671 school children aged 11, 13 and 15 years answered a questionnaire on diet, other health behaviour, social background, social network, health and life satisfaction. The proportions who ate fruit, vegetables, and rye bread every day were 77%, 64% and 94%. Moreover, 78% had fibre-containing breakfast every day and 79% had a regular lunch meal every day. 26% of the children received an optimal diet containing all of these five components every day, and 19% received less than three of these components every day. The proportions who consumed five unhealthy diet components every day (candy, chips, French fries, sausages/hamburgers, and sweet longdrinks) were 32%, 12%, 5%, 5%, and 18%. 39% received at least one of these unhealthy diet components every day. There was no association between intake of healthy and intake of unhealthy diet components. We found no age differences among boys regarding the healthy diet components but an increasing consumption of unhealthy components with increasing age. Among girls we found a decreasing consumption of both healthy and unhealthy components with increasing age. Healthy diet was associated with high social class, good health, positive life satisfaction, positive school assimmilation, and positive health behaviour.

Adolescent↗
PubMed1991

Old persons' contact with general practitioners in relation to health: a Danish population study.

The study describes health, social situation, and contact with general practitioners in a random sample of non-institutionalized persons 70-95 years old in Denmark. There was a strong correlation between health and contact with general practitioners. A small group, 3% of the respondents, had no health problems, but had been in contact with a general practitioner within the previous month. This group was characterized by a strong social network and a high degree of life satisfaction. Another small group, including 3% of the respondents, had extensive health problems, but had nevertheless not been in contact with a general practitioner within the previous year. This group was characterized by a weak social network and a low degree of life satisfaction.

Age Factors↗
PubMed1991

[Diet and health behaviour in Danish children aged 11-15 years].

A total of 1,671 school children aged 11, 13 and 15 years answered a questionnaire on diet, other health behaviour, social background, social network, health and life satisfaction. The proportions who ate fruit, vegetables, and rye bread every day were 77%, 64% and 94%. Moreover, 78% had fibre-containing breakfast every day and 79% had a regular lunch meal every day. 26% of the children received an optimal diet containing all of these five components every day, and 19% received less than three of these components every day. The proportions who consumed five unhealthy diet components every day (candy, chips, French fries, sausages/hamburgers, and sweet long-drinks) were 32%, 12%, 5%, 5% and 18%. 39% received at least one of these unhealthy diet components every day. There was no association between intake of healthy and intake of unhealthy diet components. We found no age differences among boys regarding the healthy diet components but an increasing consumption of unhealthy components with increasing age. Among girls we found a decreasing consumption of both healthy and unhealthy components with increasing age. Healthy diet was associated with high social class, good health, positive life satisfaction, positive school assimilation, and positive health behaviour.

Adolescent↗
PubMed1991

[Self-reported health status among students in Scandinavia].

The article reports data from the WHO cross-national study on health behaviour in schoolchildren. A sample of 11,774 children aged 11, 13 and 15 years in Denmark, Finland, Norway and Sweden answered a questionnaire on social situation, health, health behaviour and lifestyle. Self assessed health is reported excellent among approximately two thirds of the Swedish children, half the Danish children, one third of the Finnish children and one fifth of the Norwegian children. In Denmark, Norway and Sweden self-assessed health is better among boys than girls. The most frequent symptom reported by the children is feeling low. Approximately half the children have experienced this condition at least once during the last week. Difficulties in getting to sleep, head ache, and feeling nervous are symptoms experienced by approximately one third of the children at least once a week. Smaller proportions of the children have experienced stomach-ache, back pain, bad temper and feeling dizzy. There are minor variations between countries and between age groups, but in almost all age groups in all countries more girls than boys report these symptoms. Approximately every fourth pupil have used medication against headache, stomach-ache and coughs during the last month. More girls than boys have used these medications, less pupils in Denmark than in the other countries. Very small proportions have used medication against nervousness and difficulties to getting to sleep.

Adolescent↗
PubMed1990

[Social inequalities in child health status].

The article describes the health situation in relation to demographic and social class variables in a sample of 1,671 schoolchildren aged 11, 13 and 15 years in Denmark. The proportions assessing their health as excellent, good, fair, or poor were 47%, 39%, 13%, and 1%, respectively. 22% reported daily symptoms and 74% weekly symptoms (20% one symptom a week, 54% two or more symptoms). During one week, 50% suffered from bad moods, 37% insomnia, 30% depression, 26% headaches, 22% nervousness, 19% back pain, 14% abdominal pain, and 12% vertigo. 37% had used medical drugs during the last month, most frequently for headaches (25%), colds (11%), coughs (9%) and abdominal pain (8%). Girls showed poorer self-assessed health than boys, more symptoms and more use of medication. The youngest pupils had the most frequent symptoms and the oldest least. There were no health differences when place of residence or family composition were considered, but there were clear social class differences. Pupils from the lowest social class and pupils whose parents were not included in the social class classification (e.g. disability pensioners) had the poorest self-assessed health, the most frequent symptoms and the highest use of medication.

Child↗
PubMed1990

[Physical exercise among school children. A nation-wide sociomedical study of 1,671 children 11-15 years of age].

A total of 1,671 children aged 11, 13 and 15 years from a nationwide random sample of schools completed an anonymous questionnaire on their social backgrounds, social networks, health, life satisfaction, and health behaviour. The proportion practising outdoor activities at least three times a week was 57%; 37% did some physical exercise in their leisure time sufficient to make them breathless or sweat at least four times a week; 43% at least four hours a week. Two thirds were active members of a sports club. A minority of 8% did not carry out any physical exercise during their leisure time sufficient to make them breathless or sweat. Boys did more physical exercise than girls irrespective of the measurement of exercise. The most important motives for physical exercise were to improve health, to get in good shape, to have fun, and to make new friends. More than 90% of the children intended to do physical exercise at the age of 20. High intensity of physical activity was associated with high social class, strong social integration in the peer group, easy contact with parents and friends, physical exercise among parents and best friends, high degree of life satisfaction, and good health.

Adolescent↗
PubMed1990

[Smoking habits among children aged 11-15 years in 1988. A study of smoking habits and their connection with social background factors, health, satisfaction and social networks].

A total of 1,671 schoolchildren aged 11, 13 and 15 years answered an anonymous questionnaire in 1988 on their social backgrounds, social networks, health, life satisfaction and health behaviour. The proportions who had tried to smoke were 24%, 51%, and 66% in the three age groups; the proportions of smokers were 3%, 8%, and 29%, and the proportions of daily smokers were 0%, 2% and 6%. More girls than boys were smokers but there was almost no difference if place of residence, social class, or family type were considered. Almost the entire variation could be explained by best friends' smoking habits and by the number of smokers at home. Smoking was associated with poor health, fatigue, school tiredness, school performance below the average, frequent contacts with friends outside school and at night, difficulties in discussion with parents, ease in discussions with friends, and with having close friends. The proportion of smokers, among children has been steadily declining since the first Danish nationwide survey was carried out in 1959.

Adolescent↗
PubMed1990

[Self-reported health status and drug use among the elderly].

A random sample of 1,261 non-institutionalised persons aged 70-95 years in four Danish communes replied to questionnaires on health, functional ability, drug use, and living situation in October-November, 1986. Twenty-four % assess their health as excellent, 27%, 39% and 10% good, fair, or poor. Younger persons report better self-assessed health than older, males better than females irrespective of age. Chronic ailments are reported by 51%, most frequent hypertension (24%), heart disease (17%), and chronic bronchitis/asthma (12%). More females than males and more old than young report chronic ailments. Seventy-six % have experienced one or more physical symptoms during the past month, most frequently aching in back and hips (39%) aching in knee and feet (36%), vertigo (27%), swollen legs (25%), and headaches (19%). Fourty-six % report one or more mental symptoms during the past month, most frequently difficulties falling asleep (30%), fatigue without specific reason (21%), and depression (18%). Females report more symptoms than men, older persons report more symptoms than younger. Fourty-nine % report difficulties in hearing during conversations among several persons, 24% in conversations with one other person. Twenty-three % have difficulties reading printed text. Fifty-nine % report memory problems. Functional ability is described by 13 daily activities and 31% can perform all activities without trouble, 29% with some trouble but without help, whereas 13 and 27% need help for one, or more of these activities. More females than males and more older than younger need help.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗
PubMed1989

[Quality of life, health and social contacts in elderly people unable to go out-of-doors].

The study includes 1,261 individuals aged 70-95 years old selected at random in four Danish communes with varying degree of urbanization. In October-November, 1986 they answered a mailed questionnaire on health and, social situation, quality of life, and utilization of health and social services. The object of the article is to describe elderly persons with reduced ability to leave their homes. The proportion with difficulty in leaving their home is 13% and 7% need help to get outdoors. The proportion with mobility problems is larger among women and increases with increasing age. Mobility is not associated with urbanization, household composition, housing situation, floor, stairs and social class. Mobility problems are more frequent among elderly with the lowest incomes and the most extensive health problems. Mobility problems are associated with reduced quality of life, negative self-esteem reduced social network and poor "means of communication" (hearing and sight). Elderly persons with mobility problems use more health and social services than those with unrestricted mobility. However, the use of services from the primary health services are more frequent among those who can get outdoors with some difficulty than among those who cannot get outdoors on their own. Lack of engagement toward the problems of this group of elderly must be anticipated to lead to great health and social requirements in this group in the years to come.

Aged↗